Arytenoid muscle

Arytenoid muscle
Muscles of larynx. Posterior view.
Oblique arytenoid: The "X" in the center.
Transverse arytenoid: Bands underneath the "X".
Aryepiglotticus: Wraps around back.
Sagittal section of the larynx and upper part of the trachea. (Arytenoideus visible at center right.)
Details
OriginArytenoid cartilage on one side
InsertionArytenoid cartilage on opposite side
ArterySuperior laryngeal artery
NerveRecurrent laryngeal branch of the vagus
ActionsApproximate the arytenoid cartilages (close rima glottis)
Identifiers
Latinmusculus arytaenoideus
Anatomical terms of muscle

The arytenoid muscle /ærɪˈtnɔɪd/ or interarytenoid muscle is a composite intrinsic muscle of the larynx, consisting of a transverse part and an oblique part - the two parts may be considered as separate muscles: an unpaired transverse arytenoid muscle, and a bilaterally paired oblique arytenoid muscle.[1]

The two constituent parts differ in their attachments, structure and actions. Both receive motor innervation from the recurrent laryngeal nerve(s) (each nerve being a branch of one vagus nerve (CN X)).[1]

  1. ^ a b Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 727. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)